Gas-engine valve.



H. V. BOWMAN.

GAS ENGINE VALVE. APPLICATION FILED APR. 25, 1912.

Pat-elated Oct. 19, 1915.

2 SHEETS-'SHEET I.

76 Igg L3/I' @Hog/nega Hiv. owMAN.

GAS ENGINE VALVE.

APPLICATION FILED APR. 25, Iv9l2.

Patented 001;. 19, 1915-.

GAS-ENGINE VALVE.` i:

To Il whom 'it nun/'coincida' r Ie it known that I, Ijlinvn V. Bowman, acitizen ot" the Vinted States, residing at Toledo, in the county otCinnberlaml, State improvements in rotary valve constructions and Amore,especiallyto rotary valves for use as intake 'and outlet valves for4internal combustion engines, and the object of my invention is to.improve the construction and incrase the efficiency or' valves of theabove nature. And a further object of my invention is to provide arotary valve which may be employed as both vthe intake and outlet valveot both cylinders ot a two cylinder, four-cycle engine.

-lVith these andother objects in view, my invention will be more fullydescribed, illustra ted in the aCcompanyingdrawings which show apreferred embodiment of my device and then specifically pointed out inthe claim which is attached to and forms a part of this application.

In the drawings,I `ignre 1 -is a fragmeir" tary sectional vlew of thecylinders of a two cylinder engine, cach having a single-valve portacting as both an outlet and inlet port, showing my improved valve inoperation. Fig. 2 is a transverse section through the line 2 2 ofFig. 1. Fig. 3 is a perspective of the valve, the valve casing beingshown in section. Fig. el is a perspective of a modiled form ot my valveadapted for use as either an inlet or an outlet valve. Fig. 5 is aperspective ot' a somewhat similar form nl valve. lfig. (i-.is asectional view of a single. cylinder engine showing the valves shown inFigs. it and 5 employed as intake' cylinder, four-cycle engine of thetype in which each cylinder has a single port adapted toV serve both asan inlet and outlet port.

12 and 13 designate the piston and 14 and 15 the ports respectively ofthe two cyl-` v K Specification of Letters Iatent. n Igj A j`jii'ppiicanon faed April 25, 1912...-5seria1NQ. 693,148.

mimi/rv.` isowiviAN, or rompo, rLL1No1s.

te 'tra oet; 1i

a vertically extending cylindrical body in ders. i Iositionedbetweenlthies'e cylinders and connuunicatmg with the pontsthereof, 'isthe;valve casing of my valve,l comprising member iloiopenatboth ends andprovided uljacent its, lowerend witht anv` inwardly directed annularflange 17. This body me1nber is provided intermediate its length Withlaterally directed,.` diametrically, diSpQSQd chambers 1S and19tlie,former`,of whichfis.-j`

terminated by'a. 4port v20 registering'with i thel port 14Cotthecylinder y10 while the latter is provided. with ai port,21registering with theport 15 ofthe cylinder 11,'v these chambers-com,municating `throughout" their f .v

of `the valve casing..,Bracel rods 'tend transversely,.across vthe,lower end offtlf'ie valve body and form aconnecti'on vfor 4v,thel

`which is open atlooth ends hi h ismy seatedby its` lower end uponvtheflange;17

upper `end of they valve stem 124; the free {end} of which isdirected-iv downwardly'` and-'terminates in position` to be 'rotatedlfthe crank shaft of the engine through theintercession of any suitablegears.- "Ihle' valvefis provided with spaced apart, longitudinallyextending `ports and ,26 the former of which forms the intake port ofthe'valve while the latter Jforms th'e outlet port. The valve body isprovided -longitudinally througl'iout the greater portion of its lengthby an axially positioned partition wall 27,

one of the 'ports being positioned upon oneside of the wall while theother port 1s positioned upon the opposite side. The upper end of thisWall is provided with a laterally directed extension 28 which' closestheuppei` end of the intake chamber of the valve while the lower end of thewall is provided with an oppositely directed extension 29 which closesthe lower end of the outlet chamber of the valve. Communicating with thelower end of the valve casing .is the inlet pipe 30 While an exhaustpipe leads from the upper end of the valve casing.

In Figs. 1 and 2 I illustrate the valve in the position occupied whenthe piston of the cylinder 10 is at the end of its intake stroke whilethe piston of the cylinder 11 is at the beginning of its exhaust stroke.It will of course be understood that the gearing by means of which thevalve is rotated is adapted toY rotate the valve through one completerevolution while the crank shaft revolves twice. f i

From the foregoing description, taken in connection with the drawings,the operation of my valve will be readily understood.-

In the remaining .figures I have illustrated a somewhat modified form ofvalve construction adapted for use as an' intake or outlet valve.

The valve shown in Fig. 4 of the drawings, comprises aeylindrical casing32 open at its upper end, closed at its lower end and 15' providedintermediate its length with a laterally extending chamber 33 having aport 34 adapted to register with the inlet port of the cylinder.Positioned within this valve casing is the valve comprising a hollowcylindrical body member 35, also closed at its lower end and restingupon the bottom of the valve casing and this valve body is provided witha longitudinally extending valve port 36 which, in one position of thevalve, registers lwith the chamber 33 of the valve casing. Extendingupwardly and cenj trally through the bottom of the valve casing y andsecured to the closed lower end of thel valve is the valve steml 8 7 bymeans of which the valve is rotated in its casing. In Fig. 5 I haveillustrated a slightly modified form of the valve shown in Fig. 4, thisvalve being especially adapted for use' as an exhaust valve. In thisform of valvet'he valve casing 38 is open at its lower end and closedlat its upper end as also, is the valve 39 whichl rests upon an inwardlydirected, 'annular adjacent the lower end of.

flange 40 formed the valve casing. The valve stein 41 of this valveextends upwardly through the open @opten of this patent may be obtainedfor lower end of the valve casing and is secured bythe transverselyextending cross braces i2.

In Figs. 6 and 7 I have illustrated a conventional form of singlecylinder gas engine showing tlie valve shown in Figs. 4 and 54 inoperation, the engine being shown at the beginning of its compressionstroke.

From the foregoing description itv will be apparent that I have provideda simple and eicient form of rotary-valve which' will serve both as aninlet and an exhaust valve for both cylinders of .a two cylinder,fourcycle vinternal combustion engine.

It. .will further be apparent that by slight modifications the valve maybey-adapted to serve as a simple valve for either the intake or exhaustvalve of asingle cylinder.

It will of course be understood that minor' changes in the detailsof'construetioii may be made if desired without in the slightest degreedeparting from the spirit-of my in.v

An engine"valve comprising the combinationvwitli an open-endedcylindrical Veasing 'of an annular shoulder fformed o nj-"tlie innerRoss NoR'rHwaY, HARRY SHUEY.

ve cents each, by addressing this Commissioner ot- Eatents,

Washington, D. C.

